Multiple widgets drag&drop with specific selection doesn't work well

[Dumluregn]

Type of report

Feature request

Provide detailed reproduction steps (if any)

1. Open /tests/plugins/widget/manual/clipboardhtml test.
2. Make selection containing a few widgets, but starting and ending with text.
3. Drag&drop.

Expected result

Widgets content should change as described in test scenario.

Actual result

Widgets content doesn't change.

Other details

• Browser: Firefox
• OS: macOS
• CKEditor version: 4.13
• Installed CKEditor plugins: widget

[Comandeer]

It's more of a feature request, because current implementation is built around modifying copied content, not altering pasted one. Because of that, handling d&d will require altering the whole d&d logic to introduce new serializing behaviour to it.

[f1ames]

@Dumluregn @Comandeer how did it worked before the recent changes in clipboard? From what I understand it works as before the change:

Widgets content doesn't change.

So we are missing the part for handling d'n'd (with selection containing widgets)? If so we can handle it as a follow-up.

[Comandeer]

It is supported only on d&d of one widget – as it was the only case supported by the previous implementation. I didn't extend drag handler, only copy one.